Machine for inserting fastenings



|||||| lllllIll R. H. LAWSON MACHINE FOR INSERTING FASTENINGS Filed`Jan. 23, 1945 4 Sheets-Sheet 1 Inventor RoberzHLan/Son Nov. 11, 1947.

@FHL #VUM Nov. 4l1,` 1947. R. H. LAwsoN MACHINE FOR INSERTING FASTENINGSj Filed Jan. 23, 1945 4 Sheets-Sheet 2 oberffl'. Lawson N.11,1947. R H.LAWS-ON v2,430,515

MACHINE FR INSERTING FASTENINGS Filed Jan. 23, 1945 4 Sheets-Sheet 3 R.H. LAwsoN MACHINE FOR INSERTING FASTENINGS Filed Jan. 23, 1945 Nov. 1l,1947.

Patented Nov. 11, 1947 MACHINE FOR INSERTING FASTENINGS Robert H.Lawson, Beverly, Mass., assigner to United Shoe Machinery Corporation,Flemington, N. J., a corporation of New Jersey Application January 23,1945, Serial No. 574,086

2v2 Claims. (Cl. 125) This invention relates to an improved machine forinserting fastenings into Work pieces, such asy shoe parts, and isherein illustrated as applied to the fastening of shoe uppers to solemembers after the upper of each shoe has been worked into lastedrelation to the sole member.

In the manufacture of shoes of that type in which the margin of theupper is secured in lasted position in substantially parallel relationto the outer or bottom face of the insole preparatory to the attachmentof an outsole directly to the margin of the upper by suitable means, itis Well known to employ fastenings such as staples to secure the upperto the insole, successive portions of each staple being progressivelybent during the driving operation, but before entering the Work, by adeector, thereby causing the staple to follow a curved path in the WorkWithout penetrating the entire thickness thereof.

It is an object of the present invention to improve upon fasteninginserting machines of the type just referred to and particularly toinsure that fastenings, such as staples, are fully driven home orcountersunk in the work surface, thus mitigating or entirely removingthe danger that in the continuing processing of the shoe some of theinserted staples Will be pulled out, this being due to the fact that byinadvertence that particular staple was not fully driven home.

It is another object of the invention to provide a, fastening-insertingmachine of very simple and compact construction having neverthelessaccurate and dependable control over the formation and insertion of eachfastening.

In one important aspect the invention accordingly provides a novel andimproved machine for inserting fastenings according to which eachfastening is inserted by means of another fastening of the same type,the rst mentioned fastening being bent While it is being inserted by theother fastening and this insertion being continued until the trailingend portion of the fastening which is being inserted is embedded orcountersunk in the surface of the work. This has the particularadvantage of insuring that in each instance the inserted fastening isfully driven home and iS accomplished by causing the other fastening tobe the immediate and direct driving element in contact with thefastening being inserted rather than relying on the driver to be thedirect driving element. The driver often can not be moved downsufficiently to countersink the driven fastening, and this is due to thefact that the driver is apt to interfere With the deflector which ismounted adjacent to the point of entry of the fastening into the Work.

The illustrated fastening forming and inserting machine has a supply ofa continuous strand of fastening material such as staple Wire Which isintermittently fed by suitable feeding mechanism. The leading endportions of the Wire are successively received by Wire severingmechanism Where they are severed from the strand of Wire to formsingle-legged fastenings and whence they are transferred to a positionto be engaged by a driver. Moreover, the illustrated machine is providedwith a deflector adapted to engage successive portions of each fasteningduring its insertion thereby bending said portions and causing thefastening to follow a curved path through the Work Without penetratingthe entire thickness thereof. In causing the single-legged fastening tocurve through the Work its leading end portion is permitted, inaccordance with the invention, to emerge again from the side of the workfrom Where it Was inserted, additional means being provided forclinching the emerged end portion of the driven fastening and insertingthe eX- tremity of that clinched end portion into the surface of theWork.

While the invention is thus disclosed herein in its application to theattachment of shoe uppers to sole members, it will be recognized that"in a more general aspect the invention provides a novel machine forinserting fastenings not limited in utility to the fastening of `uppersnor to shoe manufacture. Such utilityis especially evident Whereconditions are such that it is inconvenient, impracticable orundesirable to anchor the fastening by clinching it against the rearsurface of the Work as, for example, Where the rear surface of the Workis not conveniently accessible, where the work is thicker than thelength of the fastening, or Where it is undesirable to have thefastening penetrate, as it might, entirely through the Work.

These and other features of the invention Will now be described indetail in connection with the appended drawings and will be pointed outin the claims. Y

In the drawings:

Fig. 1 is a View in front elevation of the head of a fastening-insertingmachine in which the invention is embodied;

Fig. 2 is a, View in right-hand side elevation of 5 the machine head,with certain parts broken away;

Fig. 3 is a plan View of the machine head, with certain parts brokenaway;

Fig. 4 is a detail View in front elevation of the 10 fastening-formingand -inserting mechanism of the machine illustrated in Fig. 1;

Fig. 5 is a sectional. Niew, thesectionbeing taken along the line V--Vof Fig. 4;`

Fig. 6 is a plan View of a portion of a lasted l5V shoe bottom after theinsertion therein of fastenlings which secure the marginaliportionlof.the upper in lasted position upon the shoe bottom;

Fig. l is a view in side elevation lofi alportion: of the forepart of alasted shoe; partly 'infsectiong 2'() and illustrating the insertion ofa fastening there-#- in prior to the clinching of oneend-v portioncf thefastening;

Fig. 8 is a view similar to Fig. '7 after thei clinching of thefastening. 25 As has been'stated,` the-inventionis `,concerned with theiinsertion of fasteningsf intolworkf parts primarily for theipurposev ofsecuring together' such: work-partsxinf juxtaposition. #Inthe-illustrated example the worlr'isfashoe.comprising an -30 insole I(Figs. 6 to 8) on a last-Irland' a-n upperaU.y

which :has been-:tensioned over-the last and-the# marginallportionof-.which has beenfworked' over Y Y the'bottom face ofthe-insole:andisVsecuredin' i lastedpositionv by fastenings F 1inserted =through 435the.marginaliportion-ofA the .upper and into the insole Le Asillustrated-inFigsi.Fffancb 8,-.theinl.. serted lfasten-ing is! curvedandlis so inserted that-a1 it does notpenetrate the :.entira thicknessofthe v work parts;with-.the resultthatathe sidefof the .lill combinedworkcpartsloppositenthe sideof entry A of the-fasteninguis.notpenetrated by' the fastening and; therefore, :remains: smooth-andrlunmutilated.'y 'The ffastenings, whichare -:single-. legged in-the-sense thattheyf,comprisefaesubstanii5 tiallyi lstraight. piece, .-.a-re..formedl vfrom a: con-N.` y tinuous .strand of :fastening material,suchas wire.' The above-,described -inserted .-fastening.ris pro-Vduced-.-.by progressively Y. bending 'then-straight fastening duringitsinsertion ztherebyfcausingthe o0 fasteningito follow 'ai curved-patlrythrough the z combined worl parts l withouti penetrating the entire.thickness-thereof.- `In the: usualfpractice, .l -r this is accomplishedby providing a deflecting-v means such as a baille plate, which-acts onsuce-55 cessive'portionsofthe fastening `before-these 4portions .enterthe workr However,.the,provision .of such deflecti-ng means at thefpoint of entry of the fasteninglinto .theworle makes litimpossi-ble forI the usual fastening-inserting means, such .as a till driver., toremain in, contact -with the .trailing .endz l portionof the`fastening.Luntil.,that end. portion. is countersunlcin the surface .ofthe work, this... i by reasonbf the -interference .ofA the vdrivenwiththe'deflecting means. It is. therefore contem.- 05 plated to insert eachfastening into'the 'work by means of another.similar 'fastening'which'isin direct Contact with `the"trailing-end portion of the fasteningto beinserted.'*Thefastening whic'hcauses `the `otheriastening 'to beinserted (0 and which may'betermedthe inserting 'fastening may'itself`be engaged by thedriver: --This 'avoids anyAinterference*between-'thedriver vand the baille plate by whichthe'driver eitherwould'become bent or be broken and enables the inserting-75fastening to countersink or embed the fastening to be inserted into thework, since the interference of the inserting fastening with the baffleplate and any bending of that fastening is of no consequence owing tothe fact that the inserting fastening, after having inserted afastening, itself becomes a fastening to be bent and inserted. Asillustrated, the fastening, which, as stated, is a straightl piece ofwire before its insertion, is inserted endwise and is caused to follow acurved path through the work, the insertion of the fastening beingcontinued until its trailing end portion is 4embedded inthe surface ofthe work and its leading end portion has emerged from the side of entryof the work and protrudes therefrom. Thereafter this leading end portionis clinched, that' is to say, bent-and caused to reenter the surface ofthe work.

The illustratedfastening-inserting machine is adapted-fteinsert-fastenings of the above-mentionecrtype'in` th'emanner justdescribed. The

Vutility-of the machineA is not limited to any particularfastening-inserting operation on any particula'i-ltypeof work. In theillustrated example, the machine is shown as adapted for use in securingthe vtensioned marginal portion/of the shoe.-

upperU in lastedtrelationito theiinsole'I. though ano. lasting:mechanism propereis 'shown in thedrawings;.it ist@ beunolerstoodwtlfiatv such' lasting'mechanism may be provided inconnection with the machine Yandmay/ comprise the yconventional'pair ofpower-operated pincerjaws for progressively tensioning the upperover thelast andfor drawing its marginalportion inwardly over the'insole.. Aftera portion of themargin of theupperhas been drawn inwardly overtheinsole--a'ndbeen laid' upon it, a fasteningv is in-v serted' through itwhile it isstill held ltensionecl, andinto .the insole to secure thatportion of the uppermmarginto the insole. *4 The""fastenings which-fare`successively inserted' into rsuccessive portion'slofI the manuallypresented and fed work are formedin the machine from a continuous strandof fastening material,v such as wire, which is usually wound up on areel (notshown) and is fed into themachine by mechanism to be de- The"illustrated machine comprises a box- Y shap'edframe. or headl i0(FigsJ-l, 2 `and 3)V which hou'sesfor` supports the operatinginstrumentalitiesr of the machine and their actuatingvmechanismsl- Thehead i9 issecured to a suitable support, such as a column I2.

The principalmechanisms of the illustrated l machine are a wire-feedingmechanism, a wiresevering and fastening-transferring mechanism,

a fastening-driving mechanism, a. fastening-de-- f fleeting mechanismand a fasteninglinchin'g tor (fnotshown). z Driving connectiont betweenf the pulleyl I6 and the shaft lll isY established -or interrupted'by apin clutch 2li, o'f conventional type-which is controlled by a treadlerod-22 cohnectedto a treadle (not shown) and provided with a spring 2dtending to elevate the treadle rod-22 and to disengage the clutch.vDownward movement of the-rod 22 by the treadle serves to.

engageftheclutch which is kept engaged as long as the=treadle rod isAmaintained. in its downward position so that the machine may beoperated continuously through a series of cycles, As will be described,the cam shaft I4 carries a series of cams for actuating the operatingelements of the above-mentioned mechanisms in a predetermined sequence.

The above-mentioned wire-feeding mechanism serves to advance a strand ofwire in the machine and to feed the leading end portion of the wirestrand intermittently into the wire-severing mechanism where a fasteningis formed. The wire is preferably wound up on a reel (not shown) whichconveniently is supported on top of the head I8. The illustratedwire-feeding mechanism is similar in construction and operation to thewire-feeding mechanism disclosed in United States Letters Patent No.2,334,715, granted on November 23, 1943, on an application filed in myname. The support for this mechanism is a bracket 26 (Figs. 1 and 3)which is bolted to a plate-like bracket er support 28 of somewhattriangular shape. The support 28 is bolted at opposite sides to themachine frame and serves to carry various of the above-mentionedmechanisms, as will be described. In brief, the wirefeeding mechanismcomprises a wire feed roll 3l) which is intermittently rotated in onedirection to advance the wire in a downward direction and which to thisend cooperates with a pressure roll 82 provided with a groove in itsperiphery in which the wire is received, the wire passing between thetwo rolls 30 and 32. The roll 32 is spring pressed toward the roll 3Band is rotatable in a pivotally mounted bearing piece. A pivotallymounted and manually operated throw-out lever @It having a cam portionat its hub to move the roll 32 out of contact with the roll 38 so as teinterrupt the feeding of the wire. Normally, the throw-out lever 3@ isso positioned that it permits the spring pressed roll 32 to contact theroll 38 thus to enable the latter to advance the wire step by step. Tothis end the roll 38 is mounted to rotate freely about the axis of astub shaft secured in the bracket 26 and has integral with one face ofit a ratchet wheel 3B which is adapted to be rotated intermittently by aspring-biased pawl 38 pivoted on an arm 40 secured on the saidstub-shaft carrying the roll 38. The arm i0 is rocked by pivotalengagementwith a link 42 extending upwardly therefrom and pivotallyconnected at its upper end to a cam iever 84 rotatably mounted on ashaft d6 secured in suitable bearings in the machine frame. The camlever 44 is in the form of a bell crank lever and has a rearwardly anddownwardly extending arm 88 (Fig. 2) which carries a cam roll 58 held bya spring 52 against the periphery of a cam disk -58 secured on the camshaft I8. The spring 52 is tensioned between the arm e8 and a transversebar 55 secured in the machine frame. The cam disk 54 is so shaped thatthe cam lever eli is swung downward at a predetermined point in eachcycle of operation with the result that the pawl 38, which is held byits spring in engagement with a tooth in the ratchet wheel 38, causesthe latter aswell as the feed roll 38! to be rotated a predetermineddistance. As a result of the succeeding upward movement of the cam lever44 the pawl 38 is caused to ride idly back over the teeth of the nowstationary ratchet wheel 126 into its initial position where it againengages a tooth of the ratchet wheel 36 in readiness to rotate thelatter when the cam lever i4 is next operated.

The wire which passes from the reel through lil) 6 suitable wire guidesbetween the rolls 38 and 32 is fed into and through a tube 58 which isclamped to the brackets 26 and 28 and is in alinement with a groovedwire guiding member 88 of rectangular cross-section closely fitting intoa channel provided in the front face of the bracket 28 and coveredpartly by a-bracket 82 and partly by a plate 64, both being detachablysecured to the bracket 28. The groove in the guiding member 60 extendslongitudinally thereof and is in alinement with the wire passage of thetube 58 so that the wire is fed into and through the guiding member El!the groove of which, since it is covered by the bracket 62 and the plate6ft, represents a wire guiding passage or guideway enclosed on all sidesbut, nevertheless, readily accessible.

After a length of wire has been fed by the above-described mechanismthrough the wire guiding member @il a piece is severed from the leading'end portion of the wire strand to become a fastening, Thereupon thefastening is transferret*A te position from which it can be driven bythe fastening driving mechanism, The wiresevering andfastening-transferring mechanism comprises a roll F8 (Figs. 1 and 4)which is seated in a circular recess 'dl provided in the front face ofthe bracket 28 and is covered by the plate 64. The roll li) is integralwith a stem 12 which is rotatably mounted in a horizontal bore providedin the bracket 28 through which bore it extends rearwardly. The frontface of the roll 18 is provided with a diagonally extending groove I4the open side of which is covered by the plate 64, and which is adaptedto receive the wire when .fed by the above-described feeding mechanism.The above-mentioned wire guiding member 68 is rounded at its bottom endin conformity with the curvature of the periphery of the roll i8 andterminates in close proximity to that periphery. The roll 18 is rotatedbetween two predetermined positions one of which may be called the Wirereceiving position and the other the fastening inserting position. Inthe Wire receiving position the groove I4 of the roll is in alinementwith the groove of the Wire guiding member 58, and in the fasteninginserting position the groove lli is in alinement with the path ofmovement of a driver, to be described, the axis of rotation of the roll18 lying in the intersection of the line of wire feed and the path ofmovement of the driver.

To rotate the roll 18 back and forth between its two predeterminedpositions, the stem l2 has clamped to it an arm 'It extending laterallytherefrom and pivotally connected to a long link 78 extending upwardlyin the machine. The uper end of the link 18 is pivotally connected toone of two parallel arms provided at one end of an l-l-shaped member 852(Fig. 3) the other end of which is pivotally secured by a pin 82 to abracket on the machine frame. The pivotal conriection between the link13 and the member 8E! is made by a screw 88 the stem of which is offsetfrom or eccentric to the head and extends through the above-mentionedarm of the H-shaped member 88. It is secured in place by a nut 85. Afterloosening the nut 88 the screw 84 may be rotated so as to adjust theposition of the link 'i8 heightwise of the machine thus to adjust thepredetermined positions of the roll 'i8 to be in exact alinement withthe wire passage of the guiding member or with the path of travel of thedriver. To rotate the roll i8 the til-shaped member 88 is rocked aboutthe axis of the pin 82 and to this end the other free arm of the member88 is pivotally connected by a link 88 (Fig. l) to a canr.-lever00pivotally securedv to the shaftg 05. The cam lever-00 is in the ormof. abell` crank leverandhasfa depending arm 02 (Fig. 3) carrying a-:rolliyilwhich is held against the peripheryl of acam disk 005on thecam shaft Iby means or f a springif extended between the cam lever 00 andthebar 50.:The cam00- is so designed that v the train-lof elements actuated by itwill rotate the fasteningthus formed is a straight piece of wire.lThetprincipal element of the fastening driving mechanism is,A of course,the driver |00 (Figs. 4, 7 andi-8);. mentioned` above, which is of verysmall cross-section, and as a matter of fact in the illustratedexample,it is as thin as the wire from whichthefastenings areformed. As will bedescribed -the driver |00 is so mounted that it is supported-at all ofits sides and over its entire extentin anyposition of itsreciprocatory-movement-The driver isyreciprocated in a guideway|02;(Figs.;4and 5) provided in and along the frontface of a guidingmember ,|00 of rectangular cross-section which is seated in a recessprovided in the vfront face of the plate-like bracket 28 with the frontface `of the guiding member |04 ush with that of the bracket 28. Theguiding member -|04 isv covered in part by the above-mentioned plate 04and in part by a plate |00 abutting the upper-'right hand end of theplate 00 and securedl to. the frontface of the bracket 20. Asillustrated best in Fig-4, the lower end of the guiding member |04 `is.rounded and located in the immediate vicinity of the periphery of thewire-.severing-roll 'l0 so that Ain the Afastening drivingposition ofthe `roll .10 the groove 'i0 provided. therein is in alinement with thevdriver guideway |02. Below the roll l0, as seen in the directionof.drive, there-isprovided in a recess in the `front faceoiv the bracket 20a guidepiece- |05 arrangedand grooved in the same manneras the guidingmember |00 -and covered by theplate 04. The severed fastening, whenbeing drivenv downwardly by the driver |00, is pushed out ofthe groove'lli ofthe roll l0 into the groove in theY guidepiece |05, rthe twogrooves being alined.v Tnelower end of the guidepiece |00 terminateswiththe .lower end of the bracket 28 and the plate 00 against which the workis held and thusconstitutes a nozzle through which thefasteningsareinserted into the work. The abovementionedplate` |05` isprovided over the entire lengthof its rear face with a recess |07 inwhich is movable a driver bar |08. rlhe driver bar |08 to which thedriver |00 is attached, as will be presently described, is reciprocatedand is in sliding contact with the front face of the bracket 20. Thedriver bar. |08 is rabbeted at its lower end to form a, shoulderedportion |00 of reduced thickness. To secure the driver |00 to the driverbar |08 the former is provided at its upper end with a n H0 (Fig. 5)which extends into a slot provided in one end of a pin l2 insertedthrough the portion |00 of the driver bar, the inner end of the pinbeing flush with the inside face of the portion|09 and the outerend ofthe pini i2 pro-i jecting from the-front face of the portion |00.`

Driven-through part'of the driver bar |08 and part of the portion |09and located in tangential relation to the pin ||2 is a hardened pin H0theinner end vof which is provided with a small ridge f extending intothe guideway |02 and engaging the upper end of the driver |00 and its nI0. Thus,

on reciprocation of the driver bar |00 by mecha-- nism to be described,the driver |00 is recipro cated along the guideway |02. The driver |00isof sufcient length to engage, when on its driving stroke, a fasteningheld by the roll 'l0 and to drive-it downwardly into the guidepiece l|05from which it is inserted into the work.

, In view of the above-mentioned provision oi i the recess |01 in theplate |06 serving to accommodate the driverbar |00, theguideway |02 forthe driver |00 is not covered over its entire eX- s tent. To insure,nevertheless, that the driver is supported all around over its entirelength and in any position of its travel, the following is provided.Pivotally mounted on the projecting portion of the pin ||2 vand lyingagainst the front the driver |00, the guiding member l l0 is movedVdownwardly and to the left of Fig. 4, the direction of; movement beingdetermined by the slot |20, and thus it continuously covers the driver.Reversely, on retraction of the driver bar 00 and the driver |00, theguiding member Vi 60 is retracted.

to cover the driver in the upper portion of its travel.

To reciprocate the driver bar |08 and the driver |00-the followingmechanism is provided. lThe driver bar |00 has a fork-shaped upper end|22 (Figs. `1v and 2) carryinga transverse pin |213v which extendsthrough a'slot |20 provided in one end of an arm |28. The arm |20 issecured on a shaft |30 rotatably mounted in bearingsprovided inaU-shaped bracket |32 which isA integral with the bracket 02. -Anotherarm|30 is secured to the shaft |30 and is actuated by mechanism, to bedescribed, to load two heavy torsion springs |30 and-|33 (Figs. 2 and 3)coiled about the shaft |30 on opposite sides of the hub ofthe arm |28.

One end of each torsion spring engages the top l face .of a lug providedon the arm |20 andthe other end rests against a pin secured in theVbracket |32 (see Fig. l). [is will be noted, on upward rotation of thearm |30', the arm |20 is moved upwardly in a counterclockwise direction,as viewed in Fig. 1, thereby loading the springs |36 and |38. Mechanismis provided for holding the springs |36 and |38 loaded and thus holdingthe arm |28 cocked. This mechanism comprises a latch arm |40 (Fig. l)secured to the shaft |30 and cooperating with a pawl |02 pivotedsubstantially midway between its ends on an upward ex ension |00 of thebracket |32. The left-hand end of the pawlV |02 (as viewed in Fig. 1) isconnected by a spring E05 to the bracket |32. rlihe spring |00 thustends to rotate the-pawl |02 in a counterclockwise direction, as viewedin Fig, l. During the cooking of the arm |28 the latch arm |00, which isrotated with the arm |20since it is secured to the same shaft |30, ridesalong the under surface of the pawl |02 until it snaps behind a shoulder|48 of the pawl :12, thus holding the arm |28 cocked.

The above-mentioned mechanism for actuating the arm |54 to load thesprings |30 and |33 and to cock the arm |25 is constructed and arrangedas follows: The end of the arm |34 remote from the shaft |30 isfork-shaped and carries a block |50 (Fig. 1)l pivotally secured theretoby a transverse pin |52 extending through the forked end of the arm |34.The block |50 has extending through it, above and at right angles to thepin |52, another pin |55 the opposite ends of which extend outwardlyfrom the block |50through vertical slots |55` (Fig. 2) provided in thetwo prongs of the forkshaped lower end |58 of a link |60, the upper endof which is pivotally connected to a cam lever |62, to be described. Theend faces of the block |50 are in sliding engagement with the innerfaces of the prongs of the link |60, Elevation of the link |50 thuscauses upward rotation of the arm |55, with the results described.

To release the pawl |42 with the result that the loaded springs |35 and|38 swing the arm |28 downward in a clockwise direction (as viewed inFig. l) to actuate the driver |00, there is provided a pin |85 extendingfrom the link |50 substantially midway between the upper and lower endsthereof. As will be noted, on downward movement of the link |60 andassuming that the arm |28 is held in its upper cocked position, there isa lost motion between the then stationary pin |54 and the link |50 inview of the provision of the vertical slots |55. Upon `engagement of thedownward moving pin |5|| with the right-hand arm `of the pawl |42 (asviewed Fig. l) extending into the path of movement of the pin |64, thepawl |42 is tripped to release the latch arm |40 and to [free thesprings |35 and |38 to actuate the arm |28. On upward movement of thelink |00, after an operating movement has been imparted to the arm |28and thus to the driver |00, the erm |34 is again rotated upward to loadthe springs |35 and |38, there being then no lost motion between thelink |50 and the pin |54 carried by the arm |311 since, as a result ofthe downward movement of the arm |28 by the springs |38 and |38, the arm|34 also was moved downward and located the pin |54 in the lower ends ofthe slots |56.

The above-mentioned cam lever |52, `which moves the link |00 up and downat predetermined points in each cycle of the machine, is pivotallymounted on the shaft 46 and is in the form of a bell crank lever havinga downwardly extending arm |55 (Fig. 2) carrying a roll |68 which isheld by a spring against the periphery of a cam disk |72 secured on thecam shaft I4.

As illustrated in Fig. 1, the driver actuating arm |28 is provided atits lower face with an abutment |14 which, during downward movement ofthe arm |23, is caused to strike upon a bumper |16 secured to thebracket |32 to cushion the blow of the arrn |28 and to limit the extentof its operative downward movement, as well as that of the driver.

As has been stated, the driver |00, on its driving stroke, movesdownwardly along the guideway |02 into engagement with the vfasteningcontained in the groove 'I4 of the roll 'l0 and, as a result of itscontinued downward movement, causes the fastening to be driven into thelower guiding pieceor nozzle |05. However, the

10 lower end off the driver |00, at the termination of its drivingstroke, is located a considerable distance from the surface of the workpresented against the lower end. of the guiding piece |05 (see Figs. '7and 8). This distance corresponds substantially to the length of onefastening. Hence, it is impossible for the driver to insert thefastening F engaged by it into the work and drive its trailing endportion home as would be desirable. To cause each fastening to benevertheless fully inserted into the work and to have its trailing endportion countersunk into the surface of the work the arrangement in theillustrated machine is such that each fastening is inserted through theagency of the succeeding fastening with which the driver |00 is incontact. This arrangement is of considerable advantage in view of theprovision of fastening deilecting means which, as illustrated, is abaille plate |80 (Figs. 1, 4, '7 and 8). The baille plate is locatedopposite the point of emergence of the fastening from the nozzle |05 andis in contact with the work. Its purpose is to bend successive portionsof the fastening, as the latter is being driven, before these portionsenter the work so as to cause the fastening to follow a curved path inthe work without penetrating the entire thickness thereof. If thearrangement were such that the driver |00 would insert each fasteninginto the work by direct contact with the fastening, the stroke of thedriver, of course, would of necessity be much longer but in no case canits stroke be so lengthened that the driver could countersink thetrailing end portion of the fastening into the surface of the work inview of the unavoidable interference of the driver with `the baffleplate. If such an attempt were made,

the driver would either become bent or its lower end would break off.This disadvantage is completely avoided by utilizing the fasteningsucceeding the one to be inserted as the direct driving means, since aslight bending of the forward end of the inserting fastening by thebaffle plate at the end of the inserting operation (see Fig. 8) isimmaterial, to say the least, and may be considered to be of advantagebecause that fastening, which becomes the next fastening to be inserted,is to be b'ent anyhow when being inserted into the work so as to causeit to follow a curved path therethrough.

To obtain different degrees of curvatures of the inserted fastenings toaccommodatevarious work thicknesses, the baille plate is adjustable withrelation to the guiding piece or nozzle |05. To this end it is providedwith lugs |82 having slots (not shown) through which extend screws |84adjustably securing the baflle plate |80 to the plate 54 and the bracket28, a set screw |85 being provided in the baille plate |80 for makingfine adjustments.

As illustrated in Fig. '7 the fastening F in being inserted into thework and following a curved path therethrough reemerges with its leadingend portion from that surface of the work from which it was caused toenter the work. This protruding reemerged leading end portion of thefastening is then clinched by being turned back into the work.

For clinching the reemerged leading end portion of the insertedfastening the above-mentioned clinching mechanism is provided whichcomprises a bar-shaped clinching member 200 (Figs. 1 and 4) having alaterally bent lower end provided with a concave clinching faceterminating atlone edge in a projection 202. The

work, as-illustrated in-Fig. 8..'1This reinsertion ofthe extremity ofthe fastening-.into the work is made possible by the vprovision of theprojection 202 at the clinching endof the clinching m'emb'er 200. Theclinching member is mo'vableinspaced guideways 204 provided inthebracket 28 and is l connected at its upper end-tolabarZ (Fig. 1) theupper end'of which is pivotally secured to an arm 208 securedtofashaft-"Z I--rot`atablein bearposition-with the groove 14 inalinement with the groove of the guiding member 60. -This having beencompleted, the cam 96 of the wire-severjring mechanismimparts motion tothe lcam lever 90, `elevating the-link 'I8 with the yresult -that theroll l0 is rotated linto its fastening inserting '-'positon in which thegroove 'F4 is in al-inement with the grooves in the guiding members |04and `f |05. The leading end portion of the wire, which previouslyhasfbeen fed into the roll |0,'is thus severed from its'strand 'to form-a-fastening due to the shearing action between the roll l0 and theguide-member 00, and this fastening is then located vin the path o'ftravel of the driver |00.

ings provided in abrack'et 2|2 (Fig. 3). A spring 2M, which is stretchedout` between the machine `Then the cam- |12 imparts motion to the 'camlever |62, moving the link |60 downward to releasethe pawl-l42, freeingthe arm |28 -to the frame and the outerfend ofthe arinf 208, tends so torotate thearm" 208 that the clinching member 200 is caused to clinch-thereemerged end pormanner. Y The spring'I 2|4 inorder to lperform-thisroperation -is loaded and-to 'this end the retracting v movement o'f thedriver'bar-f |08 'which has been described is utilized to impart anupward movement to the arm 208 into a 'cocked position by the engagementof the outerendiof'the arm |28 with a projection2|providedat'thelowersurface of the arm 208.` The arm`208 is held cocked by the engagement ofa sh0ulder2'l8 (Fig. l) provided on a tail piece'220of the-arm 20S-witha'latch 222 withdraw the latch 222 and to-release the arm 208 to theaction of thev loadedv spring-i214, the latch 222 is pivotally connectedtothe` lower end of a bar 224 the upper "end of which is pivoted to aactionof the loaded springs |36 andv |38 to actuvate the driver 00.V.The driver in descending -engage's thafastenng F located in the roll'l0 tion of the -fastening F inthe above-described and drives it intothe-nozzle4 |05 inwhich the preceding fastening already is located in faposition to be Ydriven into the work presented to the lower end of thenozzle |05. 'The just mentioned fastening,- alread-ylocated in thenozzle |05, is

- Ithus insertedinto the Iwork and by reason oi' cam lever 226 securedvon the shaft 40. Thecam f lever 226 is in the form of'a bell'cranklever and has a depending arm 228 (Fig. 2) carrying a roll 230 held by aspring:Y 232 against theperiphery of a cam disk 23d-secured onthecamshaft I4. The cam disk 234fis so shapedthat at the proper chine the bar224 is raised to permit the actuation of the clinching member200 bythespring 2|4.

To limit and adjustably to' determine the eX- tent of downward movementof Ythe clinching member 200, thereis pivotally secured to the outer endof the arm 208 a vertical rod-236 (Fig. l) extending through a hole in alug 230 provided on the bracket 2|2. The rod'235 has threaded on itsupper end a nut 240 carrying a washer and a lock nut 242. Upon downward'movement of the arm 208 by the spring 2|4 the washer of the nut 240 iscaused to-Strike the top faceof the lug 238, thus terminating thedownward movement of the clinching memberV 200.

The operation of the machine is apparent from the foregoing descriptionbut may besummarized as follows: Assuming the machine parts -to be intheir initial inoperative positions,` with bothv the driver |00 and theclinching member" 200 retracted and cocked, the operation of the machineis started by the lowering of the-'treadle rod 22, thus tripping theclutch 2'0 v`and'initiating the rotation of the cam shaft |4.- As'aVresult the a swinging movement to the cam lever 44, movthe provision'ofthe Lbaffle plate |80 it is caused to follow a curved-path throughthe work with its `leading endportion reemerging'from the side off entryof the-Work. Then the cam' 234'renders thecam lever y22S-active tolelevate the lat`ch'222 pivoted at one end to the machine frame and en-'l' f andfto' trip'the'afm 203,'thus'enabling the loaded gaging Withits-other end the shoulder 2 |8. To l" spring 2M `toactuate theclinching member 200 toengage the "reemerged leading end portion of.the-'inserted `fastening 'and -to clinch'it against 1 andreinsert-it-into the surface of the work while the trailing endvportionfofthis fastening is held by thel succeeding fastening and thedriver.

`v`Thereafter the cam 96 actuates the cam lever 90 `inthe-oppositedirection to turn the roll 210 back into its wirereceiving'position after thecam |12 of the driving' mechanism has`caused the driver |00 to be retracted at which time the arm |28 of timeduring each cycle of operations of the mathe-'driver-operatingmechanism, by engagement with the projection`2|6 on the`arm'208 of the`mechanism for Ioperatingthe clinching member,

' 'retract's theclinching member 200, both the arms |28 andZBthen beingheld in their elevated cocked positions by theirrespectivelockingmechanisms'with their actuating springs loaded in readiness for thenextfastening inserting operation.

Having thus described myA invention; what I "claim as'new 'and desireto'secure by Letters Patent .of the United States is:

-l". In'afastening-inserting machine, the com- 'bination'withmeans forfeeding la continuous form fastenings for insertion into a'work piece,ofmeans for `inserting each'fastening into the work piece by. engagementwith a succeeding fastening 2. In a fastening-inserting machine, thecombination withmeans' for" feeding a continuous 'strandof fasteningmaterial, and means adapted ing the link 42 ldownwardly to' rotate thewire feed roll 30 a predetermined distance to advance they leading endportion of they wire strand through the guiding member 60 into the roll10 which, at that time, assumes its wire receiving to receive the`le'ading'end portion of said strand and to sever from saids'trand' a'piece to form 'av single-'legged' fastening, of'a passageway forreceivinga plurality offastenings, and means movable in said passagewayand arranged by engagement with the 'uppermost fastening in said"passageway'to causethe' lowermost fastening to ber inserted into-thework.

3. In a fastening-insertingmachine; thel combination with means forfeeding a continuous strand of fastening material, and means forsevering pieces from said strand successively to form fastenings forinsertion into a Work piece, of means for inserting each fastening intothe Work piece by engagement with a succeeding fastening, and adeflector adapted to engage successive portions of each fastening duringits insertion and to bend said portions thereby causing the fastening tofollow a curved path through the Work Without penetrating the entirethickness thereof.

4. In a fastening-inserting machine, the combination with means forfeeding a continuous strand of fastening material, and means forsuccessively severing pieces from said strand to be successivelyinserted into a Work piece as fastenings, of means for inserting eachfastening into the work piece and countersinking it therein byengagement with a succeeding fastening, and a deflector adapted toengage successive portions of each fastening While it is being drivenand to bend said portions thereby causing the fastening to follow acurved path through the work Without penetrating the entire thicknessthereof.

5. A fastening-inserting machine having, in combination, means forfeeding a continuous strand of fastening material and means adapted toreceive the leading end portion of said strand and to sever it so as toform a single-legged fastening, said severing means being arranged totransfer the fastening from its severing position into a drivingposition, a driver for inserting the fastening into a Work piece, adeflector adapted to bend successive portions of the fastening beforethey enter the Work piece, thereby causing the fastening to curvethrough the Work piece during the insertion thereof without penetratingthe entire thickness of the work piece and causing the leading endportion of the fastening to emerge from the side of the Work piece fromWhere it was inserted, and means for clinching said leading end portionof the fastening.

6. A fastening-inserting machine having, in combination, means forfeeding a continuous strand of fastening material and means adaptedsuccesively to receive the leading end portion of said strand and tosever it so as to form successively single-legged fastenings, saidsevering means being arranged successively to transfer each fasteningfrom its severing position into a driving position, means for insertingeach fastening into a work piece by engagement With a succeedingfastening, a deflector adapted to bend successive portions of eachfastening before they enter the Work piece thereby causing the fasteningto curve through thev Work piece during the insertion thereof withoutpenetrating the entire thickness of the work piece and causing theleading end portion of the fastening to emerge from the side of the Workpiece from Where it was inserted, and means for clinching said leadingend portion of the fastening.

7. In a fastening-inserting machine, the combination with means forstep-by-step feeding a continuous strand of stapling Wire, of wirereceiving means adapted successively to sever the received end portionsof the wire and to transfer the severed end portions as fastenings intoa position from which they are inserted into a Work piece, a driveracting on a plurality of fastenings positioned in the line of drivethereby inserting the lowermost of said fastenings through the agency ofthe other fastenings and moving the succeeding fastening into positionto be inserted during the succeeding fastening inserting operation ofthe driver.

8. In a fastening-inserting machine, the combination with means forstep-by-step feeding a continuous strand of stapling Wire, of Wirereceiving means adapted successively to sever the received end portionsof the Wire and to transfer the severedend portions as fastenings into aposition from which they are inserted into a work piece, a driver actingon a plurality of fastenings positioned in the line of drive therebyinserting the lowermost of said fastenings into the work piece throughthe agency of the other fastenings and moving the succeeding fasteninginto position to be inserted during the succeeding fastening insertingoperation of the driver, and a deector for successively bending portionsof each fastening as it is being inserted thereby causing the fasteningto follow a curved path through the work piece Without penetrating theentire thickness thereof.

9. In a fastening-inserting machine, the comfbination With means forstep-by-step feeding a continuous strand of stapling Wire, of wirereceiving means adapted successively to sever the received end portionsof the Wire and to transfer the severed end portions as fastenings intoa position from which they are inserted into a Work piece, a driveracting on a plurality of fastenings positioned in the line of drivethereby inserting the loWermost of said fastenings into the Work piecethrough the agency of the other fastenings and moving the succeedingfastening into position to be inserted during the succeeding fasteninginserting operation of the driver, a deflector for successively bendingportions of each fastening as it is being inserted thereby causing thefastening to follow a curved path through the Work piece withoutpenetrating the entire thickness thereof and causing the leading endportion of the driven fastening to protrude from the work, and a memberfor clinching said protruding end portion of the fastening.

10. In a fastening-inserting machine, the combination With means forfeeding a continuous strand of fastening material and means forsuccessively severing pieces from the leading end portion of said strandto be successively inserted into a Work piece as fastenings, of meansfor inserting each fastening into the Work piece and countersinking ittherein by engagement with a succeeding fastening, a delector adapted toengage successive portions of each fastening While it is being drivenand to bend said portions thereby causing the fastening to follow acurved path through the work Without penetrating the entire thicknessthereof and causing the leading end portion of the fastening to emergeand protrude from the Side of the Work piece from Where it Was inserted,and means for clinching said leading end portion of the fastening.

11. In a fastening-inserting machine having fastening inserting meansincluding a thin, reciprocable driver and a stationary guideway for thedriver, the provision of movable means for covering the driver in saidguideway to insure support of the driver on all sides, over its entirelength and in any position of its reciprocation.

12. In a fastening-inserting machine having fastening inserting meansincluding a thin, reciprocable driver and a stationary driver guidingmember provided with a guideway open on one side, stationary means forcovering part of said guideway, a driver bar, a recess in said coveringmeans to accommodate the driver bar, said re- 15 cess exposing part ofsaid guideway, and means movable with the driver to cover the latterduring the entire extent of its travel in those portions of the guidewaywhich are exposed by said recess.

13. In a fastening-inserting machine, the combination with wire feedingmeans and fastening inserting means including a driver, of rotary meansadapted to receive the leading end portion of the wire, means forrotating said rotary means at the end of the wire feeding operation tocause said rotary means to sever the fed-in portion of wire to form afastening and to transfer said fastening to a position in which it willbe engaged by the driver during the driving stroke of the latter, anddriver guiding and supporting means adapted to support the driver at allsides thereof and over its entire extent in any position of its travel.

14. In a fastening-inserting machine, the combination with wire feedingmeans and fastening inserting means including a driver, of rotary meansadapted to receive the leading end portion of the wire, means forrotating said rotary means after it has received the end portion of thewire thereby causing said rotary means to sever the end portion of theWire to form a fastening and to transfer said fastening to a position inwhich it will be engaged by the driver during the driving stroke of thelatter, driver guiding and supporting means provided with a guideway inwhich the driver is adapted to move and which is open on one side, and amovable driver guard covering the open side of said guideway.

15. In a fastening-inserting machine, the combination with wire feedingmeans and fastening inserting means including a driver, of rotary meansadapted to receive the leading end portion of the wire, means forrotating said rotary means after it has received the end portion of thewire thereby causing said rotary means to sever the end portion of thewire to form a fastening and t transfer said fastening to a position inwhich it Will belengaged by the driver during the driving stroke of thelatter, driver guiding and supporting means provided with a guideway inwhich the driver is adapted to move and which is open on one side, and adriver guard movable with the driver to cover the open side of saidguideway.

16. In a fastening-inserting machine, the combination with wire feedingmeans and fastening inserting means including a driver and a driver bar,of rotary means adapted to receivethe leading end portion of the Wire,means for rotating said rotary means after it has received the endportion of the wire thereby causing said rotary means to sever the endportion of the wire to form a fastening and to transfer said fasteningto a position in which it Will be engaged by the driver during thedriving stroke of the latter, driver guiding and supporting meansprovided with a guideway in which the driver is adapted to move andwhich is open on one side, and a movable driver -guard pivotally securedto the driver bar and adapted to cover the open side of said guideway.

17. A fastening-inserting machine having, in combination, a workengagingY nozzle through which fastenings are inserted into a workpiece, a driver movable in the nozzle, means for so controling themovement of the driver that the driver terminates its operative stroke asubstantial distance from the Work presented to the nozzle, means forsuccessively transferring fastenings 16 into the path of drivingmovement of the driver, and means for actuating the driver to insert thelowermost fastening positioned in the nozzle by means of a fasteninginterposed between the driver and said lowermost fastening.

18. A fastening-inserting machine having, in combination, a Workengaging nozzle, means for positioning a plurality of fastenings forinsertion successively into a work piece, a reciprocating driver adaptedto insert the lowermost of the fastenings and thereafter to return toits initial retracted position, means for so actuating the driver thatits fastening inserting movement terminated with the driver spaced fromthe work a distance corresponding substantially to the length of afastening to be inserted and with fastening located between the end ofthe nozzle and the driver, and means for transferring a fastening intothe path of operative movement of the driver after the latter has beenretracted into its inoperative position so that the last mentionedfastening is located between the driver and the fastening alreadycontained in the nozzle.

19. A fastening-inserting machine having, in combination, a workengaging nozzle, means rior positioning a plurality of fastenings forinsertion successively into a work piece, a reciprocating driver, meansfor reciprocating the driver between a, fastening inserting position anda retracted position, means for so determining the fastening insertingposition of the driver that the latter is spaced a substantial distancefrom the work and a fastening is located in the nozzle between thelowerend of the nozzle and the driver, means for transferring afastening into the path of operative movement of the driver on movementof the latter into its retracted position so that during the succeedingoperative movement of the driver the fastening contained in the nozzleis inserted into the Work piece by means of the fastening succeeding it,the latter fastening being engaged by the driver.

20. A fastening-inserting machine having, in combination, a driver,means for presenting faste'nings to the driver to be so inserted into awork piece by the driver that one end portion of each fasteningprotrudes from the Work. a clinching member adapted to clinch saidprotruding end portion of the fastening, means for retracting the driverand the clinching member against the action of spring means, means forholding the driver and the clinching member in their retractedpositions, and separate means for successively releasing the driver andthe clinching member to the forces of their respective spring means.

2l. A fastening-inserting machine having, in combination, a workengaging nozzle, means for positioning a plurality of separate, alinedfastenings for insertion successively into a Work piece, a fasteninginserting driver, means for imparting a fastening inserting movement tothe driver while in engagement With the uppermost of the aiinedfastenings as a result of which the lowermost of the fastenings isdriven out of the nozzle into the work and the succeeding fastening ismoved into the nozzle to be inserted during the next fastening insertingmovement of the driver.

22. A fastening-inserting machine having, in combination, a workengaging nozzle, means for positioning two alined fastenings forinsertion successively into a Work piece, a fastening inserting driver,means for imparting a fastening inserting movement to the driver Whilein engagement With the uppermost of the alined fastenings 17 to drivethe lowermost fastening out of the nozzle into the work piece and tocountersink said lowermost fastening in the work piece by causing theuppermost fastening to move into and along the nozzle until the leadingend of that fastening is positioned ush with the lower end of thenozzle.

ROBERT H. LAWSON.

REFERENCES CITED The following references are of record in the le ofthis patent:

Number UNITED STATES PATENTS Name Date Frechette May 15, 1894 Clark etal Jan. 28, 1902 LlaChapelle Dec. 22, 1931 MacDonald Oct. 24, 1933MacDonald May 28, 1940 Foster Dec. 20, 1932 Gilette Mar. 17, 1936

